Inconsistent palaeomagnetic recording of the Blake event in Chinese loess related to sedimentary environment

	Inconsistent palaeomagnetic recording of the Blake event in Chinese loess related to sedimentary environment
	Zhu, RX ; Coe, RS ; Guo, B ; Anderson, R ; Zhao, XX
刊名	GEOPHYSICAL JOURNAL INTERNATIONAL
	1998-09-01
卷号	134 期号:3 页码:867-875
关键词	Blake event Chinese loess dust storms pedogenesis
ISSN号	0956-540X
文献子类	Article
英文摘要	Three loess sequences located east of the Liupan mountain region, China, were studied to obtain records of the Blake polarity event. Palaeomagnetic records from the appropriate stratigraphic interval of these three sequences, however, record the Blake event poorly in one case and not at all in the other two cases. It is important to understand why these loess sequences miss the Blake event, whereas others record it quite well. We conclude that regional variations in the sedimentary environment over the Chinese loess plateau are responsible for the inconsistent recording of the Blake event. The palaeomagnetic records suggest a threefold subdivision of the Chinese loess plateau into (1) the central and southern portions of the part of the plateau that lies east of the Liupan Mountains, where the primary record of the Blake event has been severely smoothed or wiped out by pedogenic processes during palaeosol (Sl)formation; (2) the northern margin of the loess plateau to the east of the Liupan Mountains, where frequent, severe dust storms have resulted in discontinuous records with a high probability of missing the Blake event; and (3) the region west of the Liupan Mountains, where loess sequences are deposited rapidly and nearly continuously with only minor pedogenesis, and are thus capable of recording short events like the Blake.
WOS关键词	MAGNETIC POLARITY EPISODE ; GEOMAGNETIC EVENT ; LAST GLACIATION ; SUSCEPTIBILITY ; DEPOSITS ; BRUNHES ; IDENTIFICATION ; PEDOGENESIS ; PALEOSOL ; PLATEAU
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	BLACKWELL SCIENCE LTD
WOS记录号	WOS:000075796900018
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/75018]
专题	中国科学院地质与地球物理研究所
通讯作者	Zhu, RX
作者单位	1.Chinese Acad Sci, Inst Geophys, Beijing 1000101, Peoples R China 2.Univ Calif Santa Cruz, Inst Tecton, Santa Cruz, CA 95064 USA 3.Univ Calif Santa Cruz, Dept Earth Sci, Santa Cruz, CA 95064 USA
推荐引用方式 GB/T 7714	Zhu, RX,Coe, RS,Guo, B,et al. Inconsistent palaeomagnetic recording of the Blake event in Chinese loess related to sedimentary environment[J]. GEOPHYSICAL JOURNAL INTERNATIONAL,1998,134(3):867-875.
APA	Zhu, RX,Coe, RS,Guo, B,Anderson, R,&Zhao, XX.(1998).Inconsistent palaeomagnetic recording of the Blake event in Chinese loess related to sedimentary environment.GEOPHYSICAL JOURNAL INTERNATIONAL,134(3),867-875.
MLA	Zhu, RX,et al."Inconsistent palaeomagnetic recording of the Blake event in Chinese loess related to sedimentary environment".GEOPHYSICAL JOURNAL INTERNATIONAL 134.3(1998):867-875.